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2f0c9fe6 PB |
1 | /* |
2 | * QEMU System Emulator block driver | |
3 | * | |
4 | * Copyright (c) 2011 IBM Corp. | |
5 | * Copyright (c) 2012 Red Hat, Inc. | |
6 | * | |
7 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
8 | * of this software and associated documentation files (the "Software"), to deal | |
9 | * in the Software without restriction, including without limitation the rights | |
10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
11 | * copies of the Software, and to permit persons to whom the Software is | |
12 | * furnished to do so, subject to the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice shall be included in | |
15 | * all copies or substantial portions of the Software. | |
16 | * | |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
23 | * THE SOFTWARE. | |
24 | */ | |
25 | ||
d38ea87a | 26 | #include "qemu/osdep.h" |
737e150e | 27 | #include "block/block.h" |
c87621ea | 28 | #include "block/blockjob_int.h" |
737e150e | 29 | #include "block/block_int.h" |
c9de4050 | 30 | #include "block/trace.h" |
373340b2 | 31 | #include "sysemu/block-backend.h" |
e688df6b | 32 | #include "qapi/error.h" |
9af23989 | 33 | #include "qapi/qapi-events-block-core.h" |
cc7a8ea7 | 34 | #include "qapi/qmp/qerror.h" |
10817bf0 | 35 | #include "qemu/coroutine.h" |
db725815 | 36 | #include "qemu/main-loop.h" |
1de7afc9 | 37 | #include "qemu/timer.h" |
2f0c9fe6 | 38 | |
88691b37 PB |
39 | /* |
40 | * The block job API is composed of two categories of functions. | |
41 | * | |
42 | * The first includes functions used by the monitor. The monitor is | |
43 | * peculiar in that it accesses the block job list with block_job_get, and | |
44 | * therefore needs consistency across block_job_get and the actual operation | |
45 | * (e.g. block_job_set_speed). The consistency is achieved with | |
46 | * aio_context_acquire/release. These functions are declared in blockjob.h. | |
47 | * | |
48 | * The second includes functions used by the block job drivers and sometimes | |
49 | * by the core block layer. These do not care about locking, because the | |
50 | * whole coroutine runs under the AioContext lock, and are declared in | |
51 | * blockjob_int.h. | |
52 | */ | |
53 | ||
e7c1d78b | 54 | static bool is_block_job(Job *job) |
a7112795 | 55 | { |
e7c1d78b KW |
56 | return job_type(job) == JOB_TYPE_BACKUP || |
57 | job_type(job) == JOB_TYPE_COMMIT || | |
58 | job_type(job) == JOB_TYPE_MIRROR || | |
59 | job_type(job) == JOB_TYPE_STREAM; | |
60 | } | |
61 | ||
62 | BlockJob *block_job_next(BlockJob *bjob) | |
63 | { | |
64 | Job *job = bjob ? &bjob->job : NULL; | |
65 | ||
66 | do { | |
67 | job = job_next(job); | |
68 | } while (job && !is_block_job(job)); | |
69 | ||
70 | return job ? container_of(job, BlockJob, job) : NULL; | |
a7112795 AG |
71 | } |
72 | ||
ffb1f10c AG |
73 | BlockJob *block_job_get(const char *id) |
74 | { | |
e7c1d78b | 75 | Job *job = job_get(id); |
ffb1f10c | 76 | |
e7c1d78b KW |
77 | if (job && is_block_job(job)) { |
78 | return container_of(job, BlockJob, job); | |
79 | } else { | |
80 | return NULL; | |
ffb1f10c | 81 | } |
ffb1f10c AG |
82 | } |
83 | ||
80fa2c75 | 84 | void block_job_free(Job *job) |
05b0d8e3 | 85 | { |
80fa2c75 | 86 | BlockJob *bjob = container_of(job, BlockJob, job); |
80fa2c75 | 87 | |
80fa2c75 | 88 | block_job_remove_all_bdrv(bjob); |
80fa2c75 KW |
89 | blk_unref(bjob->blk); |
90 | error_free(bjob->blocker); | |
05b0d8e3 PB |
91 | } |
92 | ||
f321dcb5 PB |
93 | static char *child_job_get_parent_desc(BdrvChild *c) |
94 | { | |
95 | BlockJob *job = c->opaque; | |
252291ea | 96 | return g_strdup_printf("%s job '%s'", job_type_str(&job->job), job->job.id); |
f321dcb5 PB |
97 | } |
98 | ||
ad90feba | 99 | static void child_job_drained_begin(BdrvChild *c) |
f321dcb5 | 100 | { |
ad90feba | 101 | BlockJob *job = c->opaque; |
b15de828 | 102 | job_pause(&job->job); |
f321dcb5 PB |
103 | } |
104 | ||
89bd0305 KW |
105 | static bool child_job_drained_poll(BdrvChild *c) |
106 | { | |
107 | BlockJob *bjob = c->opaque; | |
108 | Job *job = &bjob->job; | |
109 | const BlockJobDriver *drv = block_job_driver(bjob); | |
110 | ||
111 | /* An inactive or completed job doesn't have any pending requests. Jobs | |
112 | * with !job->busy are either already paused or have a pause point after | |
113 | * being reentered, so no job driver code will run before they pause. */ | |
b5a7a057 | 114 | if (!job->busy || job_is_completed(job)) { |
89bd0305 KW |
115 | return false; |
116 | } | |
117 | ||
118 | /* Otherwise, assume that it isn't fully stopped yet, but allow the job to | |
119 | * override this assumption. */ | |
120 | if (drv->drained_poll) { | |
121 | return drv->drained_poll(bjob); | |
122 | } else { | |
123 | return true; | |
124 | } | |
125 | } | |
126 | ||
e037c09c | 127 | static void child_job_drained_end(BdrvChild *c, int *drained_end_counter) |
f321dcb5 | 128 | { |
ad90feba | 129 | BlockJob *job = c->opaque; |
b15de828 | 130 | job_resume(&job->job); |
f321dcb5 PB |
131 | } |
132 | ||
9ff7f0df KW |
133 | static bool child_job_can_set_aio_ctx(BdrvChild *c, AioContext *ctx, |
134 | GSList **ignore, Error **errp) | |
135 | { | |
136 | BlockJob *job = c->opaque; | |
137 | GSList *l; | |
138 | ||
139 | for (l = job->nodes; l; l = l->next) { | |
140 | BdrvChild *sibling = l->data; | |
141 | if (!bdrv_child_can_set_aio_context(sibling, ctx, ignore, errp)) { | |
142 | return false; | |
143 | } | |
144 | } | |
145 | return true; | |
146 | } | |
147 | ||
148 | static void child_job_set_aio_ctx(BdrvChild *c, AioContext *ctx, | |
149 | GSList **ignore) | |
150 | { | |
151 | BlockJob *job = c->opaque; | |
152 | GSList *l; | |
153 | ||
154 | for (l = job->nodes; l; l = l->next) { | |
155 | BdrvChild *sibling = l->data; | |
156 | if (g_slist_find(*ignore, sibling)) { | |
157 | continue; | |
158 | } | |
159 | *ignore = g_slist_prepend(*ignore, sibling); | |
160 | bdrv_set_aio_context_ignore(sibling->bs, ctx, ignore); | |
161 | } | |
657e1203 KW |
162 | |
163 | job->job.aio_context = ctx; | |
9ff7f0df KW |
164 | } |
165 | ||
ad90feba KW |
166 | static const BdrvChildRole child_job = { |
167 | .get_parent_desc = child_job_get_parent_desc, | |
168 | .drained_begin = child_job_drained_begin, | |
89bd0305 | 169 | .drained_poll = child_job_drained_poll, |
ad90feba | 170 | .drained_end = child_job_drained_end, |
9ff7f0df KW |
171 | .can_set_aio_ctx = child_job_can_set_aio_ctx, |
172 | .set_aio_ctx = child_job_set_aio_ctx, | |
ad90feba | 173 | .stay_at_node = true, |
f321dcb5 PB |
174 | }; |
175 | ||
bbc02b90 KW |
176 | void block_job_remove_all_bdrv(BlockJob *job) |
177 | { | |
d876bf67 SL |
178 | /* |
179 | * bdrv_root_unref_child() may reach child_job_[can_]set_aio_ctx(), | |
180 | * which will also traverse job->nodes, so consume the list one by | |
181 | * one to make sure that such a concurrent access does not attempt | |
182 | * to process an already freed BdrvChild. | |
183 | */ | |
184 | while (job->nodes) { | |
185 | GSList *l = job->nodes; | |
bbc02b90 | 186 | BdrvChild *c = l->data; |
d876bf67 SL |
187 | |
188 | job->nodes = l->next; | |
189 | ||
bbc02b90 KW |
190 | bdrv_op_unblock_all(c->bs, job->blocker); |
191 | bdrv_root_unref_child(c); | |
d876bf67 SL |
192 | |
193 | g_slist_free_1(l); | |
bbc02b90 | 194 | } |
bbc02b90 KW |
195 | } |
196 | ||
8164102f VSO |
197 | bool block_job_has_bdrv(BlockJob *job, BlockDriverState *bs) |
198 | { | |
199 | GSList *el; | |
200 | ||
201 | for (el = job->nodes; el; el = el->next) { | |
202 | BdrvChild *c = el->data; | |
203 | if (c->bs == bs) { | |
204 | return true; | |
205 | } | |
206 | } | |
207 | ||
208 | return false; | |
209 | } | |
210 | ||
76d554e2 KW |
211 | int block_job_add_bdrv(BlockJob *job, const char *name, BlockDriverState *bs, |
212 | uint64_t perm, uint64_t shared_perm, Error **errp) | |
23d402d4 | 213 | { |
76d554e2 KW |
214 | BdrvChild *c; |
215 | ||
b441dc71 | 216 | bdrv_ref(bs); |
132ada80 KW |
217 | if (job->job.aio_context != qemu_get_aio_context()) { |
218 | aio_context_release(job->job.aio_context); | |
219 | } | |
220 | c = bdrv_root_attach_child(bs, name, &child_job, job->job.aio_context, | |
221 | perm, shared_perm, job, errp); | |
222 | if (job->job.aio_context != qemu_get_aio_context()) { | |
223 | aio_context_acquire(job->job.aio_context); | |
224 | } | |
76d554e2 KW |
225 | if (c == NULL) { |
226 | return -EPERM; | |
227 | } | |
228 | ||
229 | job->nodes = g_slist_prepend(job->nodes, c); | |
23d402d4 | 230 | bdrv_op_block_all(bs, job->blocker); |
76d554e2 KW |
231 | |
232 | return 0; | |
23d402d4 AG |
233 | } |
234 | ||
34dc97b9 KW |
235 | static void block_job_on_idle(Notifier *n, void *opaque) |
236 | { | |
cfe29d82 | 237 | aio_wait_kick(); |
34dc97b9 KW |
238 | } |
239 | ||
559b935f JS |
240 | bool block_job_is_internal(BlockJob *job) |
241 | { | |
33e9e9bd | 242 | return (job->job.id == NULL); |
559b935f JS |
243 | } |
244 | ||
bd21935b KW |
245 | const BlockJobDriver *block_job_driver(BlockJob *job) |
246 | { | |
9f6bb4c0 | 247 | return container_of(job->job.driver, BlockJobDriver, job_driver); |
bd21935b KW |
248 | } |
249 | ||
da01ff7f KW |
250 | /* Assumes the job_mutex is held */ |
251 | static bool job_timer_pending(Job *job) | |
252 | { | |
253 | return timer_pending(&job->sleep_timer); | |
254 | } | |
255 | ||
2f0c9fe6 PB |
256 | void block_job_set_speed(BlockJob *job, int64_t speed, Error **errp) |
257 | { | |
aa9ef2e6 | 258 | int64_t old_speed = job->speed; |
2f0c9fe6 | 259 | |
a50c2ab8 | 260 | if (job_apply_verb(&job->job, JOB_VERB_SET_SPEED, errp)) { |
0ec4dfb8 JS |
261 | return; |
262 | } | |
18bb6928 | 263 | if (speed < 0) { |
1ef7d9d3 KW |
264 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "speed", |
265 | "a non-negative value"); | |
2f0c9fe6 PB |
266 | return; |
267 | } | |
268 | ||
18bb6928 KW |
269 | ratelimit_set_speed(&job->limit, speed, BLOCK_JOB_SLICE_TIME); |
270 | ||
2f0c9fe6 | 271 | job->speed = speed; |
d4fce188 | 272 | if (speed && speed <= old_speed) { |
aa9ef2e6 JS |
273 | return; |
274 | } | |
275 | ||
276 | /* kick only if a timer is pending */ | |
da01ff7f | 277 | job_enter_cond(&job->job, job_timer_pending); |
2f0c9fe6 PB |
278 | } |
279 | ||
dee81d51 KW |
280 | int64_t block_job_ratelimit_get_delay(BlockJob *job, uint64_t n) |
281 | { | |
282 | if (!job->speed) { | |
283 | return 0; | |
284 | } | |
285 | ||
286 | return ratelimit_calculate_delay(&job->limit, n); | |
287 | } | |
288 | ||
559b935f | 289 | BlockJobInfo *block_job_query(BlockJob *job, Error **errp) |
30e628b7 | 290 | { |
559b935f JS |
291 | BlockJobInfo *info; |
292 | ||
293 | if (block_job_is_internal(job)) { | |
294 | error_setg(errp, "Cannot query QEMU internal jobs"); | |
295 | return NULL; | |
296 | } | |
297 | info = g_new0(BlockJobInfo, 1); | |
252291ea | 298 | info->type = g_strdup(job_type_str(&job->job)); |
33e9e9bd | 299 | info->device = g_strdup(job->job.id); |
da01ff7f KW |
300 | info->busy = atomic_read(&job->job.busy); |
301 | info->paused = job->job.pause_count > 0; | |
01fe1ca9 VSO |
302 | info->offset = job->job.progress.current; |
303 | info->len = job->job.progress.total; | |
32c81a4a PB |
304 | info->speed = job->speed; |
305 | info->io_status = job->iostatus; | |
df956ae2 | 306 | info->ready = job_is_ready(&job->job), |
a50c2ab8 | 307 | info->status = job->job.status; |
bb02b65c KW |
308 | info->auto_finalize = job->job.auto_finalize; |
309 | info->auto_dismiss = job->job.auto_dismiss; | |
4ad35181 KW |
310 | info->has_error = job->job.ret != 0; |
311 | info->error = job->job.ret ? g_strdup(strerror(-job->job.ret)) : NULL; | |
30e628b7 PB |
312 | return info; |
313 | } | |
32c81a4a PB |
314 | |
315 | static void block_job_iostatus_set_err(BlockJob *job, int error) | |
316 | { | |
317 | if (job->iostatus == BLOCK_DEVICE_IO_STATUS_OK) { | |
318 | job->iostatus = error == ENOSPC ? BLOCK_DEVICE_IO_STATUS_NOSPACE : | |
319 | BLOCK_DEVICE_IO_STATUS_FAILED; | |
320 | } | |
321 | } | |
322 | ||
139a9f02 | 323 | static void block_job_event_cancelled(Notifier *n, void *opaque) |
bcada37b | 324 | { |
139a9f02 KW |
325 | BlockJob *job = opaque; |
326 | ||
559b935f JS |
327 | if (block_job_is_internal(job)) { |
328 | return; | |
329 | } | |
330 | ||
252291ea | 331 | qapi_event_send_block_job_cancelled(job_type(&job->job), |
33e9e9bd | 332 | job->job.id, |
01fe1ca9 VSO |
333 | job->job.progress.total, |
334 | job->job.progress.current, | |
3ab72385 | 335 | job->speed); |
bcada37b | 336 | } |
32c81a4a | 337 | |
139a9f02 | 338 | static void block_job_event_completed(Notifier *n, void *opaque) |
a66a2a36 | 339 | { |
139a9f02 KW |
340 | BlockJob *job = opaque; |
341 | const char *msg = NULL; | |
342 | ||
559b935f JS |
343 | if (block_job_is_internal(job)) { |
344 | return; | |
345 | } | |
346 | ||
4ad35181 KW |
347 | if (job->job.ret < 0) { |
348 | msg = strerror(-job->job.ret); | |
139a9f02 KW |
349 | } |
350 | ||
252291ea | 351 | qapi_event_send_block_job_completed(job_type(&job->job), |
33e9e9bd | 352 | job->job.id, |
01fe1ca9 VSO |
353 | job->job.progress.total, |
354 | job->job.progress.current, | |
bcada37b WX |
355 | job->speed, |
356 | !!msg, | |
3ab72385 | 357 | msg); |
a66a2a36 PB |
358 | } |
359 | ||
139a9f02 | 360 | static void block_job_event_pending(Notifier *n, void *opaque) |
5f241594 | 361 | { |
139a9f02 KW |
362 | BlockJob *job = opaque; |
363 | ||
5d4f3769 KW |
364 | if (block_job_is_internal(job)) { |
365 | return; | |
5f241594 | 366 | } |
5d4f3769 KW |
367 | |
368 | qapi_event_send_block_job_pending(job_type(&job->job), | |
3ab72385 | 369 | job->job.id); |
5f241594 JS |
370 | } |
371 | ||
2e1795b5 KW |
372 | static void block_job_event_ready(Notifier *n, void *opaque) |
373 | { | |
374 | BlockJob *job = opaque; | |
375 | ||
376 | if (block_job_is_internal(job)) { | |
377 | return; | |
378 | } | |
379 | ||
380 | qapi_event_send_block_job_ready(job_type(&job->job), | |
381 | job->job.id, | |
01fe1ca9 VSO |
382 | job->job.progress.total, |
383 | job->job.progress.current, | |
3ab72385 | 384 | job->speed); |
2e1795b5 KW |
385 | } |
386 | ||
387 | ||
88691b37 PB |
388 | /* |
389 | * API for block job drivers and the block layer. These functions are | |
390 | * declared in blockjob_int.h. | |
391 | */ | |
392 | ||
393 | void *block_job_create(const char *job_id, const BlockJobDriver *driver, | |
62c9e416 | 394 | JobTxn *txn, BlockDriverState *bs, uint64_t perm, |
88691b37 PB |
395 | uint64_t shared_perm, int64_t speed, int flags, |
396 | BlockCompletionFunc *cb, void *opaque, Error **errp) | |
397 | { | |
398 | BlockBackend *blk; | |
399 | BlockJob *job; | |
400 | int ret; | |
401 | ||
bb02b65c | 402 | if (job_id == NULL && !(flags & JOB_INTERNAL)) { |
88691b37 | 403 | job_id = bdrv_get_device_name(bs); |
88691b37 PB |
404 | } |
405 | ||
d861ab3a | 406 | blk = blk_new(bdrv_get_aio_context(bs), perm, shared_perm); |
88691b37 PB |
407 | ret = blk_insert_bs(blk, bs, errp); |
408 | if (ret < 0) { | |
409 | blk_unref(blk); | |
410 | return NULL; | |
411 | } | |
412 | ||
7eaa8fb5 | 413 | job = job_create(job_id, &driver->job_driver, txn, blk_get_aio_context(blk), |
4ad35181 | 414 | flags, cb, opaque, errp); |
33e9e9bd KW |
415 | if (job == NULL) { |
416 | blk_unref(blk); | |
417 | return NULL; | |
418 | } | |
419 | ||
e7c1d78b | 420 | assert(is_block_job(&job->job)); |
80fa2c75 | 421 | assert(job->job.driver->free == &block_job_free); |
b15de828 | 422 | assert(job->job.driver->user_resume == &block_job_user_resume); |
e7c1d78b | 423 | |
9f6bb4c0 | 424 | job->blk = blk; |
88691b37 | 425 | |
139a9f02 KW |
426 | job->finalize_cancelled_notifier.notify = block_job_event_cancelled; |
427 | job->finalize_completed_notifier.notify = block_job_event_completed; | |
428 | job->pending_notifier.notify = block_job_event_pending; | |
2e1795b5 | 429 | job->ready_notifier.notify = block_job_event_ready; |
34dc97b9 | 430 | job->idle_notifier.notify = block_job_on_idle; |
139a9f02 KW |
431 | |
432 | notifier_list_add(&job->job.on_finalize_cancelled, | |
433 | &job->finalize_cancelled_notifier); | |
434 | notifier_list_add(&job->job.on_finalize_completed, | |
435 | &job->finalize_completed_notifier); | |
436 | notifier_list_add(&job->job.on_pending, &job->pending_notifier); | |
2e1795b5 | 437 | notifier_list_add(&job->job.on_ready, &job->ready_notifier); |
34dc97b9 | 438 | notifier_list_add(&job->job.on_idle, &job->idle_notifier); |
139a9f02 | 439 | |
88691b37 | 440 | error_setg(&job->blocker, "block device is in use by block job: %s", |
252291ea | 441 | job_type_str(&job->job)); |
88691b37 | 442 | block_job_add_bdrv(job, "main node", bs, 0, BLK_PERM_ALL, &error_abort); |
88691b37 | 443 | |
88691b37 PB |
444 | bdrv_op_unblock(bs, BLOCK_OP_TYPE_DATAPLANE, job->blocker); |
445 | ||
cf312932 KW |
446 | /* Disable request queuing in the BlockBackend to avoid deadlocks on drain: |
447 | * The job reports that it's busy until it reaches a pause point. */ | |
448 | blk_set_disable_request_queuing(blk, true); | |
9ff7f0df | 449 | blk_set_allow_aio_context_change(blk, true); |
88691b37 PB |
450 | |
451 | /* Only set speed when necessary to avoid NotSupported error */ | |
452 | if (speed != 0) { | |
453 | Error *local_err = NULL; | |
454 | ||
455 | block_job_set_speed(job, speed, &local_err); | |
456 | if (local_err) { | |
4ad35181 | 457 | job_early_fail(&job->job); |
88691b37 PB |
458 | error_propagate(errp, local_err); |
459 | return NULL; | |
460 | } | |
461 | } | |
75859b94 | 462 | |
88691b37 PB |
463 | return job; |
464 | } | |
465 | ||
2caf63a9 PB |
466 | void block_job_iostatus_reset(BlockJob *job) |
467 | { | |
4c241cf5 PB |
468 | if (job->iostatus == BLOCK_DEVICE_IO_STATUS_OK) { |
469 | return; | |
470 | } | |
b15de828 | 471 | assert(job->job.user_paused && job->job.pause_count > 0); |
2caf63a9 PB |
472 | job->iostatus = BLOCK_DEVICE_IO_STATUS_OK; |
473 | } | |
474 | ||
b15de828 KW |
475 | void block_job_user_resume(Job *job) |
476 | { | |
477 | BlockJob *bjob = container_of(job, BlockJob, job); | |
478 | block_job_iostatus_reset(bjob); | |
479 | } | |
480 | ||
81e254dc | 481 | BlockErrorAction block_job_error_action(BlockJob *job, BlockdevOnError on_err, |
32c81a4a PB |
482 | int is_read, int error) |
483 | { | |
484 | BlockErrorAction action; | |
485 | ||
486 | switch (on_err) { | |
487 | case BLOCKDEV_ON_ERROR_ENOSPC: | |
8c398252 | 488 | case BLOCKDEV_ON_ERROR_AUTO: |
a589569f WX |
489 | action = (error == ENOSPC) ? |
490 | BLOCK_ERROR_ACTION_STOP : BLOCK_ERROR_ACTION_REPORT; | |
32c81a4a PB |
491 | break; |
492 | case BLOCKDEV_ON_ERROR_STOP: | |
a589569f | 493 | action = BLOCK_ERROR_ACTION_STOP; |
32c81a4a PB |
494 | break; |
495 | case BLOCKDEV_ON_ERROR_REPORT: | |
a589569f | 496 | action = BLOCK_ERROR_ACTION_REPORT; |
32c81a4a PB |
497 | break; |
498 | case BLOCKDEV_ON_ERROR_IGNORE: | |
a589569f | 499 | action = BLOCK_ERROR_ACTION_IGNORE; |
32c81a4a PB |
500 | break; |
501 | default: | |
502 | abort(); | |
503 | } | |
559b935f | 504 | if (!block_job_is_internal(job)) { |
33e9e9bd | 505 | qapi_event_send_block_job_error(job->job.id, |
559b935f JS |
506 | is_read ? IO_OPERATION_TYPE_READ : |
507 | IO_OPERATION_TYPE_WRITE, | |
3ab72385 | 508 | action); |
559b935f | 509 | } |
a589569f | 510 | if (action == BLOCK_ERROR_ACTION_STOP) { |
8d9648cb VSO |
511 | if (!job->job.user_paused) { |
512 | job_pause(&job->job); | |
513 | /* make the pause user visible, which will be resumed from QMP. */ | |
514 | job->job.user_paused = true; | |
515 | } | |
32c81a4a | 516 | block_job_iostatus_set_err(job, error); |
32c81a4a PB |
517 | } |
518 | return action; | |
519 | } |